docs: def sturges_doane(data):
          """
          References
          ----------
          .. [1] D. Wilkinson, "The Grammar of Graphics", 2005.
                 http://books.google.it/books?id=_kRX4LoFfGQC&lpg=PA133&ots=APHb0-p6tY&dq=doane%20binning%20histogram&hl=it&pg=PA133#v=onepage&q=doane%20binning%20histogram&f=false
          """
          n = len(data)
          return np.log10(n) * np.log2(n) + 3